HLV 10

The HLV10 is a 0-10V Amplifier with galvanically isolated input and output signals
If there are 4 or more fans connected to just one 0-10 V signal, an HLV-10 is required to be sure the same stable voltage reaches each fan.

HO06000017 - HLV-10-PE Amplifier 0-10V for building into a switch panel
HO06000020 - HLV-10 in box Amplifier 0-10V with manual control